Overview
The MAX11121ATI+ is a high-speed, low-power, serial output successive-approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device is part of the MAX11120–MAX11128 family, offering 12-, 10-, or 8-bit resolution with an external reference. It is designed for applications requiring high accuracy, low power consumption, and small package size, making it ideal for portable battery-powered data-acquisition systems and other space-constrained applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12-, 10-, 8-bit | |
| Analog Supply Voltage | 2.35V to 3.6V | V |
| Digital Supply Voltage | 2.35V to 3.6V | V |
| Conversion Rate | 1Msps | samples per second |
| Signal-to-Noise Ratio (SNR) | 49.6 dB (typical at 250kHz input frequency) | dB |
| Operating Temperature | -40°C to +125°C | °C |
| Package | 28-pin, 5mm x 5mm TQFN | |
| Power Consumption | 5.4mW at 1Msps with 3V supplies | mW |
| Full-Shutdown Current | 2μA | A |
Key Features
- Scan modes with internal averaging and internal clock mode
- 16-entry First-In/First-Out (FIFO)
- SampleSet: User-defined channel sequence with a maximum length of 256
- Analog multiplexer with true differential track/hold
- Flexible input configuration across all channels
- High accuracy: ±1 LSB INL, ±1 LSB DNL, no missing codes over temperature range
- 70dB SINAD guaranteed at 250kHz input frequency
- Wide range I/O supply: 1.5V to 3.6V
- External differential reference (1V to VDD)
- 16MHz, 3-wire SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
Applications
- High-speed data acquisition systems
- High-speed closed-loop systems
- Industrial control systems
- Medical instrumentation
- Battery-powered instruments
- Portable systems
Q & A
- What is the resolution of the MAX11121ATI+ ADC?
The MAX11121ATI+ offers 12-, 10-, or 8-bit resolution. - What is the conversion rate of the MAX11121ATI+?
The conversion rate is 1Msps. - What is the operating temperature range of the MAX11121ATI+?
The operating temperature range is -40°C to +125°C. - What is the power consumption of the MAX11121ATI+ at 1Msps with 3V supplies?
The power consumption is 5.4mW. - Does the MAX11121ATI+ support multiple input configurations?
Yes, it supports flexible input configurations across all channels, including single-ended, fully-differential, and pseudo-differential inputs. - What is the SampleSet feature in the MAX11121ATI+?
The SampleSet feature allows users to define a user-programmable analog input channel sequencer, providing greater sequencing flexibility for multichannel applications. - What is the package type and size of the MAX11121ATI+?
The package type is 28-pin TQFN, and the size is 5mm x 5mm. - Is the MAX11121ATI+ suitable for battery-powered applications?
Yes, it is designed for low power consumption, making it ideal for battery-powered instruments and portable systems. - What is the full-shutdown current of the MAX11121ATI+?
The full-shutdown current is 2μA. - Does the MAX11121ATI+ support SPI communication?
Yes, it supports 16MHz, 3-wire SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface.
